Iozone: Performance Test of File I/O Version $Revision: 3.483 $ Compiled for 64 bit mode. Build: linux-AMD64 Contributors:William Norcott, Don Capps, Isom Crawford, Kirby Collins Al Slater, Scott Rhine, Mike Wisner, Ken Goss Steve Landherr, Brad Smith, Mark Kelly, Dr. Alain CYR, Randy Dunlap, Mark Montague, Dan Million, Gavin Brebner, Jean-Marc Zucconi, Jeff Blomberg, Benny Halevy, Dave Boone, Erik Habbinga, Kris Strecker, Walter Wong, Joshua Root, Fabrice Bacchella, Zhenghua Xue, Qin Li, Darren Sawyer, Vangel Bojaxhi, Ben England, Vikentsi Lapa, Alexey Skidanov, Sudhir Kumar. Run began: Sun Sep 13 08:40:37 2026 Auto Mode Machine = Linux oleg140-client.virtnet 4.18.0rh8.10-debug #2 SMP Mon Jul 14 01 Excel chart generation enabled Excel chart generation enabled Verify Mode. Pattern dbdbdbdb Performance measurements are invalid in this mode. Using maximum file size of 102400 kilobytes. Using Maximum Record Size 512 kB Command line used: iozone -a -M -R -V 0xab -g 100M -q 512k -i0 -i1 -f /mnt/lustre/d4.lustre-rsync-test/d0.iozone-oleg140-client.virtnet/iozone-file Output is in kBytes/sec Time Resolution = 0.000001 seconds. Processor cache size set to 1024 kBytes. Processor cache line size set to 32 bytes. File stride size set to 17 * record size. random random bkwd record stride kB reclen write rewrite read reread read write read rewrite read fwrite frewrite fread freread 64 4 3306 8230 520419 901377 64 8 4303 20317 241440 681644 64 16 6736 19986 829001 226948 64 32 3225 54374 1070292 942521 64 64 6057 62083 1226821 1304314 128 4 5722 5511 544601 91292 128 8 7349 21498 554157 649331 128 16 6239 23374 1152564 895074 128 32 13147 34252 927549 914904 128 64 7980 65842 1096089 1663139 128 128 11330 68123 1196221 1885042 256 4 8429 6162 701422 587127 256 8 10335 41961 879535 411583 256 16 12550 37155 516022 386126 256 32 16308 22450 1286217 987979 256 64 10917 72502 1163562 440454 256 128 29442 135885 1413179 1471270 256 256 11644 178516 1802167 2563818 512 4 6741 4689 545766 295967 512 8 12566 21046 794832 703215 512 16 7845 26133 625030 279481 512 32 9263 32479 1251589 1075459 512 64 14124 57117 1391032 1645826 512 128 28830 49344 1450212 1036527 512 256 28819 61553 1695195 1674052 512 512 39242 129258 1640796 1723770 1024 4 9799 12689 617909 644424 1024 8 15993 12208 611748 231462 1024 16 27486 34091 812701 250482 1024 32 26262 65649 676819 599537 1024 64 13224 25905 539243 1208894 1024 128 13666 31126 423324 1268896 1024 256 31752 75958 879790 765344 1024 512 40837 110918 1294520 1473500 2048 4 6093 7447 221882 189645 2048 8 7741 17895 492915 511463 2048 16 17599 30461 579547 942932 2048 32 28710 24521 1311279 586992 2048 64 28140 46277 1397008 833909 2048 128 42234 57152 880494 330868 2048 256 32800 73668 1133415 688417 2048 512 39719 69909 752657 1593737 4096 4 9886 11036 273980 371289 4096 8 9728 9863 433071 377307 4096 16 14333 19118 696844 537462 4096 32 18688 39364 398754 849235 4096 64 35513 32582 1073956 1232255 4096 128 31882 87011 1584448 846599 4096 256 41088 56352 1099032 1189675 4096 512 44240 39275 468055 1584010 8192 4 2358 5508 184846 173772 8192 8 8558 9492 270720 192989 8192 16 17784 19345 755577 464925 8192 32 20178 23017 483478 751758 8192 64 18992 36318 586015 348462 8192 128 29616 35270 625338 439271 8192 256 24302 31622 466351 681418 8192 512 27799 36697 1341610 1098709 16384 4 7108 5774 328026 319015 16384 8 7932 9240 867387 236151 16384 16 17636 19511 253783 314086 16384 32 20434 22209 180960 276327 16384 64 31275 33216 407289 459168 16384 128 22316 38476 737485 494506 16384 256 24101 31042 436497 427357 16384 512 25029 42585 564654 478952 32768 4 7226 6769 183306 171018 32768 8 9869 9304 187031 204632 32768 16